Loose-leaf binder.



, J. c. DAWSON.

LOOSE LEAF BINDER.

APPLICATION FILED NOV. 11, 1912.

1,077,682, Patented Nov. 4,1913.

0 1 45/ 3/ 10' [29 i InvenTor:

W =fanzey'paldwn, 1' n0 UNITED 'sTATEs 13AT EN'r om t-(3 JAMES o;pAwsoN, on WEBSTER enovns MISSOURI;

[LOOSE-LEAF BINDER,

Specification oi Letters Patent. I

Application filed November 11, 1912. Serial No. 730,699.

To all whom it may concern Be itknown that I, JAMES ,C. DAWSO a citizenof the United States, and resident; of \Vebster Groves, county of St.Louis, andState of Missouri, have invented cer- "tain new and usefulImprovementsin Loose- Leaf Binders, of which the following is aspecification, and which are illustrated in the accompanying drawings,forming .a part thereof. 1

JThe invention relates to-loc-se leaf blnders I and more particularly tothose of that type having filing posts of arch. form arranged along oneedge of a suitable-base and rising therefrom. The object of theinvention is to provide. a binder ofthe type described having improvedmeansfor supporting the filing'posts to permit the arches to be openedand closed. A detail of the invention provides improved means forpositively holding the sheets in adjusted position in the binder whenshiftable sheets are used therein.

, In theaccompanylng draW1ngs F1gure 1 is a perspective view showing-abinder em bodying the featuresgofimprovement provided by the invention,the parts of the,

binder mechanism being illustrated j in open-- "as covers for the sheets12. Preferably the.

base plate 10v is rabbeted' along "one edge,

as, shown at-2'7, to receivethe basehne mber. 26 of the bindermechanism: --In thi'sjin stance, the base member'- 26 of the binder Imechanism takes the form of a j fi attened housing having closed-ends,and is'securedto the-base plate 10 withiir"the;rabbiet'.27

t' t ewt 14 1 A- plurality of pairs filing .p'osst s as 15-, 16- 'and17,18, are provided for-receiving the sheets The posts of ea h" of thesepairs are normallyeonnec'ted at their higher ends',"as by means'ofareheslshown at' 3 1 andi iorm'e'd integral with one of the posts,.-as16,

32.. Each of these'a'rches is most desirably 1-8", -of the correspondingpair. ii-A firm-connectionwith the other post, as 15,517, is provided byforming a stud, as 33, iii upon byfproviding. a socket, as 35, 36, inthe higher end of the corresponding post 15, 17 for receiving such stud.The sheets 1-2 have slotted apertures, as 21"and 22, to enable them torun upon the binder post as also to be shiftedin position thereo-n i'n adirection parallel to" the plane' of the sheet. They are 'also providedwith other apertures. as 23', 24, for'receiving additional pests deti0n.- \Vhen sheets of this form are to be used'in thebinder, anadditional pair of vided for ent'eringth'e apertlu'es 23,24 of and theyare unconnectedf The posts 15,

tubular base member 26.] The posts 16,18 and 20. each extend throughslotted aperbase 1nen1ber 26 and ;.'are rigidly secured at their lower.ends to a plate 29 housed within the chamber of the base member. Asshown,

block'39 is rigidly fixed within the cha 'nber of the base member 26 forreceivingeachof the trunnions 3 ,38. The plate '29 is ao- 'cordinglyadapted for avertical reciprocatingand a swinging movement, such as isrequired for raising and lowering the 16, 18 to. bring the studs 33, 3%into and oiit of engagement with'the sockets 36 and for-swinging theseposts into and out. of

sheets engaged with--the'pcsts 16,,18. will also be engaged with theposts 20. it is desirable that all of these posts should be movedtogether, and it is for that reason that the post 20 is mounted in theplat 29. A'loCkin plate $0 is mounted within the holding the plate 29against-movement when the posts which are=carried by the plate are losedposition. As -shown-, the move ment' of the'l ock'in'g plate 40 isguided and -limitedlby means of a pair of'studs 4.3 each of whichis-rigidly mounted within the Patented Nov. 4., 1913.

the free end of each ofthe arches 31, 3-2 andsigned to hold the sheetsin adjusted posi- P thesheets. These posts are shown as bea ing uniformin height with the posts l5, l7,

hire, as 30,]inthe upperwall of the tubular posts, "shown at 19, 20, arepreferably pro- 17 and 19 are shown asbeing rigidly mounted ln-andIlSlIlg from the upperwall of the the plate 2'0 is provided withtrunnions 37, v38 atits oppositeends. A slotted bearing parallelrelationwith the posts -15, 1T.

chamber of the tubular'base member 26 for no chamber 'ofthe tubular basemember 26 and passes through a slotted aperture ll in the locking plate.The plate 29 and the'ilocking plate 40 are each provided with lateralextensions, those of the plate 29 being shown at 42, 44, and those onthelocking plate 40 being shown at 45, 46. These lateral extensions are. soarranged upon the two plates threaded plunger 47, having one of itsends, 'as 51, formed for the reception of a key (not shown), isemployed. The other end of the plunger 47 has swiveled engagement withthe plate 40. This swiveled engagement is constructed by forming a Thead 49 upon the inner end of the plunger 47 and by providing a shapedsocket 5 0 in the adjacent end of the plate 40 for receiving the T headof the plunger. The plunger 47 has screw-threaded engagement with ahearing block 48 rigidly mounted within the chamber of the tubular basemember 26, and a keyhole 52 is formed in the end wall of the base memberin line with the plunger.

In the use of the binder with sheets of the form shown, the filingarches comprising the two pairs of posts 15, 16 and 17, 18 will normallybe locked in closed position by the engagement of the lateral extensions45, 46 of the locking late 40 with the lateral extensions 42, 44 0t theplate 29. When it is desired to differentiate any one of the sheets 12from other sheets, as when a newferent one of the apertures 23, 24 thanthe one with which it was formerly engaged. This post will accordingly.serve to positively hold the sheet in the adjusted position. \Vhen anynumber of sheets are transferred to the other side of the binder, theywill be- 3 locking plate 40.

novaesa come threaded onto the post 20 in the same relative relation aswhen they were engaged with the post 19, and this post will then serveto positively hold them in adjusted position.

For the insertion or removal of sheets the arches will be opened asappears in Fig. 1 and also by dotted lines in Fig. 3. For this purpose ake (not shown) is applied to the end of the p unger 47 through the keyopening 52 and the plun er rotatedto shift the Tie plate 29 being nowfree to be movedupwardly as well as rocked upon the t-runnions 37, 38,the posts 16 are raised to lift the studs 33, 34 out of engagement withthe sockets 35, 36, and arethen swung to an inclined position. Forclosing the hinder the posts 16, 18 are moved to cause the studs 33, 34to be hooked into the sockets 35, 36, and the plunger 47 is reverselyrotated by the key to move the locking plate 40 over the lateralextensions 42, 44 of the plate 29. lVhen the plate 29 is locked 111 thismanner,

the arches are as rigid as if in one piece and there is but one joint ineach arch over which the sheets must bepassed in transferring them fromone side of the binder to the other.

I claim as my invention:

1. In a loose leaf binder, in combination a plurality of pairs of filingposts, one of the posts of each pair being fixed and the other post ofeach pair being movable toward and away from the fixed post, all of themovable posts being rigidly connected, and the posts of one pair beingof such length as to meet when the; movable posts are in one position,the posts of another pair being separated at all times.

2. In aloose leaf binder, in combination, two pairs of relativelymovable filing posts, the corresponding posts of the two pairs beingrigidly connected, the posts of one pair being of'such length as to meetwhen in one position and the posts of the other pair being separated atall times.

JAMES C. DAWSON.

lVitnesses:

M. A. Mieoms, H. C. Rnonns.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. O.

